Molarity Unit Converter
This molarity unit converter instantly converts between all standard molarity units: M, mM, µM, nM, pM, fM, and aM. Enter a value in any unit and see all 7 conversions at once. Covers 18 orders of magnitude from molar to attomolar.
Molarity Unit Converter Calculator
Unit Conversion
Converts between M, mM, µM, nM, pM, fM, aM What is Molarity Unit Conversion?
Molarity unit conversion transforms a molarity value between different SI-prefix units. Each step represents a factor of 1000 (10³).
The 7 standard units: M (molar), mM (millimolar, 10⁻³), µM (micromolar, 10⁻⁶), nM (nanomolar, 10⁻⁹), pM (picomolar, 10⁻¹²), fM (femtomolar, 10⁻¹⁵), aM (attomolar, 10⁻¹⁸).
Choosing the right unit matters for readability: blood glucose is best expressed as 5.6 mM (not 0.0056 M), while enzyme concentrations are typically in nM or µM.
Molarity Unit Converter Formula
The formula for calculating molarity from unit conversion:
To use this formula, you need a molarity value in any unit. The calculator handles all unit conversions automatically.
Enter your values below to see the molarity unit converter formula in action.
Where mass is in grams (g), volume is in liters (L), and molar mass is in g/mol.
How to Calculate Molarity Unit Converter
Follow these steps to calculate molarity from unit conversion:
- Identify the unit conversion of your solute and gather all known values.
- Find the molar mass of the substance from the periodic table or a chemical database.
- Enter your unit conversion value and select the appropriate unit from the dropdown.
- Enter the volume of the solution in liters (L) or select another volume unit.
- Click Calculate to get the molarity result instantly.
- Verify the result using the step-by-step breakdown provided by the calculator.
Molarity Unit Converter Examples
The examples below show how to use the molarity unit converter in practice.
Example 1: What is 500 nM in µM? 500 nM = 500 / 1000 = 0.5 µM.
Example 2: Using the formula: molarity = moles ÷ volume, compute the result and verify with the calculator above.
Example 3: Enter your own values into the calculator to see personalized step-by-step results.
Molarity Calculator Tools
Explore our collection of 20 specialized molarity calculators. Each tool is designed for a specific type of calculation with its own unique input fields and formulas.
FAQs
How do you convert mM to M?
Divide by 1000. 1 mM = 0.001 M. Similarly, 1 µM = 0.000001 M.
What is 500 nM in µM?
500 nM = 500 / 1000 = 0.5 µM.
How many molarity units exist?
Common units are M, mM, µM, nM, pM, fM, and aM — 7 standard prefixes spanning 18 orders of magnitude.
What units does the Molarity Unit Converter support?
The molarity unit converter supports mass units (g, mg, µg, kg), volume units (L, mL, µL, gal), molar mass (g/mol, kg/mol), and molarity units (M, mM, µM, nM, pM, fM, aM).
Is the Molarity Unit Converter free to use?
Yes. The molarity unit converter is 100% free, requires no sign-up, and works on all devices. All calculations are performed instantly in your browser.